Foot-step ball-bearing.



M. GOHLKE. FOOTSTEP BALL BEARING.

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933fi Patented Sept. 14, 1909. '2 SHEETS-SHEET 1.

M. GOHLKE.

FOOTSTEP BALL BEARING. APPLICATION FILED JULY-30, 190s.

Patentedfiept. 14, 1909.

2 8HEETS-SHEET 2.

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MAX GOHLKE, OE BERLIN, GERMANY, ASSIGNOR T DEUTSCHE VVAFFEN-UND M UNI-TIONSFABRIKEN, OF BERLIN, GERMANY.

FOOT-STEP BALL-BEARING.

Specification of Letters Patent.

Patented se is, was.

Application'filed July 30, 1908. :Serial No. 446,177.

To all whom it may concern:

Be it known thatyI, MAX GOHLKE, a subject of the King of Prussia,residing in Berlin, in the Kingdom of Prussia, German Empire, haveinvented certain new and useful Improvements in. Foot-StepBall-Bearings, of which the following is a specification.

This inventionrelates to a foot-step-ball l0 bearing having several rowsof balls running in separate race rings and the invention consistsessentially in distributing the load on the rows of balls by anintermediate pliable pressure part. This pressure part may consisteither of a closed ring provided with radial outcut parts or it may beformed of separate ring segments which are yieldingly held together in asuitable manner on one of the race rings.

The accompanying drawings illustrate the present invention as applied toa two row ball bearing.

Figure 1' is a vertical section through the bearing, Fig. 2 is aeplan ofthe ring shaped pressure part, and Fig. 3 is a plan of a pressure partformed of a number of seg' ments sepa 'ated from each other.

The foot-step ball bearing shown consists of two separate concentricbearings a and Z2 of diiierent diameters. The arrangement of the balls 0and cages d is as usual. On the two top race rings 0 and f of thebearing is located the pressure part, by means of which the whole of thepressure of the shaft is transmitted from the part 7 to the rows ofballs. The pressure part is as shown, formed of a ring 2' having onebearing-surface at the top for the part g and two bearing surfaces atthe bottom for the two race rings 6 and f. 0 The points of pressure ofthe latter surfaces lie above the centers of the balls. The ring 2'shown has spaces around its exterior so that the parts 7' supporting thebearing surfaces or points of pressure project like rays 5 from theclosed part of the ring. In this manner a certain amount of elasticityis imparted to the parts j, so that slight "inaccuracies of workmanshipin the height of the lower pressure surfaces 0f.the ring i arecompensated. This is of great importance for the distribution of thewhole load in correspondence with the carrying capability of theindividual bearings. This distribu-' pressure parts of said bearii f.

tion of pressure is effected by the relative tilting movements of theindividual sections of the pliable pressure member. Such a dis tributionof the load could hardly be ob tained with a complete rigid pressurering 2 even with the most accurate workmansbp. The ring a might also beformed oi separate sections In held together in any suitable man ner ona race ring, in such manner however as to allow a slight rockingmovement. This construction is shown in Fig.

The present foot-step ball bearing is safer in use with great loads thanwas int; possible with foot-step bearings.

What I claim as my invention and to secure by patent is:

1. In a foot step ball bearing a" the combination of two rows of b"centrically arranged, two race rin a...

pressure member comprising series of se tions adapted to move slight-lto each other, said pressure tacting with said race ring adapted totransmit p er" axially thereto, and s2 having a reduced bearing'l positeside adapted to receive 2. In a foot step ball bear ng or the like, thecombination of two rows of balls cencentrically arranged, two racerings, and a pressure member comprising a series of sections adapted" tomore slightly with relation to each other, said pressure member cor-.-tacting with said race rings, and bell adapted to transmit pressuresubstantially axially thereto. and said pressure member having a reducedbearing taco upon its up posite side adapted to receive one of thepressure parts of said bearing and having its sections connectedtogether on their inner sides. i

3. In a foot step ball bearing or the like. the combination of two rowsof balls. said rows being concentric and one of larger diameter than theother two se arate race rings, a pliable pressure member having twobearing surfaces on its under side, said sur-' faces contacting withsaid race rings, and said pressure member having a reduced bean ingsurface on its; opposite side adapted to contact with one of the partsof said bearing, said bearing surface being so located radially of thepressure member as to dis- In witness whereof, Ihave hereunto signedtribute the load inawmanner inversely promy name in the presence oftwosubscribing portioned to the diameters of said rows of Witnesses.

bsills and said pressure member'having an MAX GOHLKE K inner continuousring-shaped portion and Witnesses:

radiating sectional portions separated by in- Ronnm: MIOHELSKI, fervenmgspaces. I WOLDEMAB. HAUPT.

